@reevesci - that was going to be my back up plan. However I cleaned the rear bench seat bottom cushion with Oxiclean (3 scoops) soak for 3 hours plus light scrubbing and agitation in the tub. I drained and refreshed the water 2 times over the 3 hours to minimize any of the rust/dirt water from staining the fabric. Most of the stains are gone! Still smells a little "old" but it looks 10000% better.
I can almost hear this crazy fool saying "The power of Oxiclean!!!"
I have used the hot iron method on auto fabric and carpet in the house. You mix ammonia and water in a spray bottle, spray the dirty fabric liberally. Then place a clean cotton towel over the soaked area. Then take your hot iron and go over the towel just like your ironing it. The towel heats up the ammonia solution and lifts it and the stains then they are absorbed by the towel. You will need several dry towels. Lots of info on the web about this method and works better by far than any other method I've tried.
